export default {
	namespaced: true,
	
	state:()=>({
		cart:JSON.parse(uni.getStorageSync('cart') || '[]')
	}),
	mutations:{
		addToCart(state,goods){
			const findResult = state.cart.find((x)=>x.goods_id===goods.goods_id)
			if(!findResult){
				state.cart.push(goods)
			}else{
				findResult.goods_count++
			}
			this.commit('m_cart/saveToStorage')
		},
		saveToStorage(state) {
		   uni.setStorageSync('cart', JSON.stringify(state.cart))
		},
		updateGoodsState(state,goods){
			const findResult = state.cart.find(x => x.goods_id === goods.goods_id)
			if(findResult){
				findResult.goods_state = goods.goods_state
			}
			this.commit('m_cart/saveToStorage')
		},
		updateGoodsCount(state,goods){
			const findResult = state.cart.find(x => x.goods_id === goods.goods_id)
			if(findResult){
				findResult.goods_count = goods.goods_count
			}
			this.commit('m_cart/saveToStorage')
		},
		removeGoodsById(state,goods_id){
			state.cart = state.cart.filter(x => x.goods_id !== goods_id)
			this.commit('m_cart/saveToStorage')
		},
		updateAllGoodsState(state,newState) {
			state.cart.forEach(x=>x.goods_state = newState)
			this.commit('m_cart/saveToStorage')
		}
	},
	getters: {
		total(state){
			return state.cart.reduce((total,item)=>total+=item.goods_count,0)
		},
		checkedCount(state) {
			return state.cart.filter(x => x.goods_state).reduce((total, item) => total += item.goods_count, 0)
		},
		checkedGoodsAmount(state){
			return state.cart.filter(x => x.goods_state)
					.reduce((total, item) => total += item.goods_count*item.goods_price, 0)
					.toFixed(2)
		}
	},
}